Manufacture of artificial stone or marble



I06. COMPOSITIONS,

COATING OR PLASTIC.

UNITED STATES WILLIAM H. HOOPES, OF

MANUFACTURE OF ARTIFI PATENT OFFICE.

BALTIMORE, MARYLAND.

CIAL STONE OR MARBLE.

SPECIFICATION forming part of Letters Patent No. 223,735, dated January 20, 1880.

Application filed December 30, 1879.

IO sess great strength, hardness, and durability,

and be susceptible of receiving a high polish. In carrying out my invention I proceed as follows: To a solution of about five pounds of will one hundred gallons of water I pmt a out two quarts of a composition consisting of sili such as sant or other form, seventy-nine parts; water. t irteen partsferriaoxide three parts; alumina in the form oi U av. Icaglln, or the like, four parts, and ma nesia one part, which composition, after Ben? drains; l

ormed, is calcined and 'rnd III. To the solution I' next add tlire )ouc tungstate of soda and after thoroughly mixing I re same I add a mixture of tartaric acid twenty-five r )onate oi soda. SIX troy ounces; tartrate of potassium ant sot iuin twelve troy OIIUCGS- The basis of the stone consists of Portland,

RosemEaIg, or other cement and si 10a in any 0 t esiret proportions-a on ten of s1 10a to one of cement answering for all ordinary purposes-and to it is added the solution prepared as above described until the mass has the desired consistency, which will vary according to the intended manner of using the cement.

In making an imitation marble I take g sum instead of cement, and matters may be added to produce an artificial stone of 0 any desired tint.

In order to produce the effect of veins, I immerse hair in the coloring-matter and spread the hair so colored on the surface upon which the slab of stone is to be formed. A layer of the stone composition being spread on the form of silica, and mix them, when properly comminuted, with the ingredients hereinbefore named. TVater is added to the whole until it is about as tliin as milk of lime, when the matters in suspension are allowed to settle, and, being drawn ofl', constitute a most excellent body for paint, To prepare it for making stone this sediment is subjected in any convenient form of apparatus to a red heat, When cool it is sifted through a' fiii' 'ii ff e gauze sieve, the finer portions being used for outside work, the coarser for backing up or for the interior of stones. For these purposes it is mixed with water in the proportions of four quarts of sediment to fifty gallons of 9; leg, and the mixture is used to properly dampen a composition of one part of cement to five s .V. u-ql.

parts of pure sand. The mass is tamped or pressed, as usual, in suitable molds, when it .forms a cheap, hard, and durable stone.

Instead of making the material into massive stones, it may be thinned so as to admit of its being applied with a trowel to walls, floors, &o., or.it may be even thinned to an extent admitting of its being applied with a brush as an ordinary paint. it constitutes a hard, durable, water-proof tinish, not liable to crack or peel off, and resisting the disintegrating efi'ects of changes of temperature and weather in a remarkable manner.

\rVhat I claim is 1. Thef composition herein described, consistingo cement "ypsum or analo 'ous material as a IIase, cm with silica, ferric oxide, alumina, magnesia, pearlash, tun s'fatl "df's'oda, tartaric acid, bicarbonate of tmeef sodmmanc potassiiini' iin d'water as 2. The hardening or solidifying composition for making artificial stone or marble herein described, consisting of silica, ferric oxide, alumina, magnesia, pearlash, tungstate of soda, tartaric acid, bicarbonate of soda, tartrate of sodium and potassium, and water, as described.

3. The process of veining artificial marble or stone, as set forth, consisting in drawing through it, while in the plastic state, hairs carrying a coloring material, as set forth.

WILLIAM HAINES HOOPES.

Wimesses:

FREDERIC G. FUGLE,

selenite rotten-stone, chalk, or other common lngretlen 0 cemenwit ne sand or other GEORGE E. BAUenMAN.

In either case, when dry 

